Bob Proulx <b...@proulx.com> writes: > Neither of those produce any output. > > $ printf '%d\n' "" > 0
Since the command substitution is not quoted the result of the expansion is subject to field splitting, thus expands to nothing at all instead of a single empty argument. Andreas. -- Andreas Schwab, sch...@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."